123456132820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{4721}}^1\times {\mathrm{76913}}^1$

素因数の和:81660

約数の個数: 48

約数和(自身を含む): 274570058448

約数和(自身を除く): 151113925628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 4721, 9442, 18884, 23605, 47210, 76913, 80257, 94420, 153826, 160514, 307652, 321028, 384565, 401285, 769130, 802570, 1307521, 1538260, 1605140, 2615042, 5230084, 6537605, 13075210, 26150420, 363106273, 726212546, 1452425092, 1815531365, 3631062730, 6172806641, 7262125460, 12345613282, 24691226564, 30864033205, 61728066410, 123456132820]

約数ペア:

[(1, 123456132820), (2, 61728066410), (4, 30864033205), (5, 24691226564), (10, 12345613282), (17, 7262125460), (20, 6172806641), (34, 3631062730), (68, 1815531365), (85, 1452425092), (170, 726212546), (340, 363106273), (4721, 26150420), (9442, 13075210), (18884, 6537605), (23605, 5230084), (47210, 2615042), (76913, 1605140), (80257, 1538260), (94420, 1307521), (153826, 802570), (160514, 769130), (307652, 401285), (321028, 384565)]